Grant found his pugnacious teenage son difficult to reason with in regards to the rules.
An example of pugnacious is the small dog who barks and nips at the other dogs in the park.
Origin of pugnaciousfrom Classical Latin pugnax, combative from pugnare, to fight ( from Indo-European base an unverified form peu?-, to punch from source Classical Greek pygm?, fist, Classical Latin pungere, to pierce) + -ous
Origin of pugnaciousFrom Latin pugnāx pugnāc- from pugnāre to fight from pugnus fist ; see peuk- in Indo-European roots.
- pug·na′cious·ness pug·nac′i·ty
(comparative more pugnacious, superlative most pugnacious)